CN101162639B

CN101162639B - Solenoid actuator

Info

Publication number: CN101162639B
Application number: CN2007101534877A
Authority: CN
Inventors: 小林昇
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2006-09-21
Filing date: 2007-09-20
Publication date: 2011-09-28
Anticipated expiration: 2027-09-20
Also published as: US7646273B2; CN201130582Y; RU2363065C2; JP2008078415A; RU2007134247A; ATE545940T1; EP1903580B1; JP4483846B2; KR100993920B1; EP1903580A3; EP1903580B8; EP1903580A2; KR20080027201A; CN101162639A; US20080074218A1

Abstract

A solenoid actuator assembled from a minimum number of parts. The solenoid actuator includes a coil bobbin carrying an excitation coil, a core extending through the coil bobbin, and an armature having an actuator leg and an angled anchor leg. The core has a first pole end and a second pole end respectively at its opposite ends. A hinge support is provided to pivotally support the armature to the core, and is formed as an integral part of the coil bobbin and is disposed at one axial end of the core to place the anchor leg in close relation to the first pole end, and at the same time to place a portion of the actuator leg in close relation to the second pole end. The hinge support is configured to make the anchor leg in direct supporting contact with the first pole end, and in edge contact with the operation position and the first pole end.

Description

Solenoid actuator

Technical field

The present invention relates to a kind of solenoid actuator, relate in particular to this actuator of hinged baffle plate (hinged flapper) type.

Background technology

Japanese patent application publication No. No.2001-212297A discloses a kind of hinged Flapper type solenoid actuator of prior art.This actuator comprises: magnet exciting coil is wrapped on the bobbin; Iron core, the extend past bobbin; And armature, along extending axially of coil.Iron core axially outwards protrudes in coil or bobbin, with the relative axle head at coil respectively first magnetic pole (pole end) and second magnetic pole is set.Armature extends along the axial length of coil usually, remains to when approaching second magnetic pole when an end of armature remains to the other end that approaches first magnetic pole and armature, and (hinge spring) supports to armature on the iron core pivotally by hinged spring.Under the situation that coil is encouraged, produce magnetic attraction, attract to second magnetic pole with a end armature, cause armature to resist the bias voltage of hinged spring and pivot.In the solenoid actuator of the prior art, yoke is connected to first magnetic pole of iron core, so that armature magnetically is connected on the iron core, and hinged spring is remained on the side of iron core.Although this solenoid actuator has used the total length of this coil to provide long stroke with an end of giving armature, but except iron core, coil and bobbin, also need yoke and hinged spring as discrete parts, the inconvenience that has finally increased cost and assembled this solenoid actuator.

Summary of the invention

In the present invention, eliminated the weak point of foregoing, the invention provides a kind of improved solenoid actuator, this solenoid actuator can be assembled with minimum parts.Comprise according to solenoid actuator of the present invention: bobbin is loaded with magnet exciting coil around it; Iron core, this bobbin of its extend past; And armature, it has along bobbin to the outward extending actuator legs of length (actuator leg).This coil is applicable to the connection external voltage source, thereby is optionally encouraged.The opposite end of this iron core axially outwards protrudes in coil, so that first magnetic pole and second magnetic pole to be set respectively in its opposite end.Be provided with hinged support, so that armature is supported on this iron core pivotally, so that armature pivots between service position and off-position.Armature forms and comprises the anchor leg, and this anchor leg extends with the relation that becomes angle with the actuator legs end from this actuator legs.Hinged support forms the global facility of bobbin and is arranged on an axle head of iron core, so that this anchor leg is placed near first magnetic pole, and simultaneously the part of actuator legs is placed near second magnetic pole.And this hinged support structure directly supports contact first magnetic pole for making the anchor leg.Because hinged support is set to the global facility of bobbin, therefore just armature can be assembled on the solenoid group of forming by bobbin, coil and iron core (solenoid block) without any need for other parts.Therefore, can be with this solenoid actuator of minimum component-assembled, to save cost and to improve output.

According to a kind of scheme of the present invention, a kind of solenoid actuator is provided, it comprises: bobbin; Magnet exciting coil, it is wrapped on the described bobbin, is used for being connected with external voltage source, thereby is optionally encouraged; Iron core, it is configured to extend through described bobbin so that have first magnetic pole and second magnetic pole, and described first magnetic pole and second magnetic pole outwards protrude described magnet exciting coil respectively at the end to axial of described magnet exciting coil; Armature, it has actuator legs, and described actuator legs stretches out from described magnet exciting coil along the axial length of described magnet exciting coil; Hinged support, it is configured to described armature is supported to described iron core pivotally, is used to make described armature to carry out pivoting action between service position and off-position; Wherein: described armature forms and comprises the anchor leg, and described anchor leg extends with the relation that becomes angle with the described actuator legs end from described actuator legs; Described hinged support forms the global facility of described bobbin and is arranged on an axial end of described iron core, described anchor leg is positioned near described first magnetic pole, part with described actuator legs is positioned near described second magnetic pole simultaneously, described hinged support structure one-tenth makes described anchor leg directly support with described first magnetic pole and contacts, and wherein said anchor leg keeps EDGE CONTACT in described service position and described first magnetic pole.

Preferably, first magnetic pole is configured to have flat end face, and this flat end mask has pivot edge and opposite edges, and described pivot edge is positioned at than the position of opposite edges further from actuator legs.In this connected, hinged support structure was to make the pivot edge of anchor leg and flat end face carry out EDGE CONTACT, to form the gap between the pivot edge of anchor leg and flat end face.When armature was in off-position, this gap was wide at the pivot edge place towards the opposite edges ratio, so that the anchor leg is in response to the top pivot that is activated at the pivot edge of magnet exciting coil, so that armature is moved to the service position.Therefore, can effectively utilize the magnetic attraction that is created between first magnetic pole and the anchor leg,, make the steady and effective pivoting action of armature so that the anchor leg also pivots in the side of first magnetic pole.Preferably, actuator legs becomes angle with the anchor leg with the angle less than 90 degree.

Most preferably, hinged support structure is for having: groove, the ccontaining anchor leg that passes through therebetween; A pair of side stop part, along the Width of anchor leg separately, so that the anchor leg is limited in therebetween; And end stop, described end stop and anchor leg engaged at end are to keep (retaining) in described groove the anchor leg.By this layout, although with simple assembly structure, when anchor leg or armature remain to bobbin, the pivoting action that anchor leg or armature only can be wanted, this has guaranteed reliable armature movement.

And solenoid actuator can be provided with the answer element, and this answer element is arranged between the extension of actuator legs and bobbin, so that described armature flexibly is returned to off-position under the de-energisation of magnet exciting coil.This answer element be arranged on along magnet exciting coil or iron core axially, from the part of second magnetic pole with respect to first magnetic pole.

Selectively, described actuator legs is configured to have elasticity, and under the excitation of magnet exciting coil, described actuator legs is resisted this elasticity and is attracted to described second magnetic pole.In this example, actuator legs self constitutes replys element, thereby helps to reduce the quantity of parts.

When in conjunction with the accompanying drawings, from following detailed description to the preferred embodiment of the present invention, of the present invention these and in addition other useful feature will become clearer.

Description of drawings

Fig. 1 is the stereogram according to the solenoid actuator of the preferred embodiment of the present invention;

Fig. 2 is the front view of above-mentioned solenoid actuator;

Fig. 3 is the exploded perspective view of above-mentioned solenoid actuator;

Fig. 4 and Fig. 5 illustrate the cutaway view that above-mentioned solenoid actuator is in its inoperative and service position respectively;

Fig. 6 is the enlarged drawing that the part of above-mentioned solenoid actuator is shown;

Fig. 7 is the partial view that the same section of contrast solenoid actuator is shown;

Fig. 8 is the front view that the remodeling of above-mentioned solenoid actuator is shown; And

Fig. 9 is the front view that illustrates according to the solenoid actuator of another embodiment of the present invention.

Embodiment

With reference now to Fig. 1 to Fig. 3,, Fig. 1 to Fig. 3 illustrates the solenoid actuator according to the preferred embodiment of the present invention.This solenoid actuator comprises solenoid group or electromagnetism group and armature 50, and this armature 50 is by described group of object or the parts that drive this armature that consequently is dynamically connected.Solenoid group is made up of magnet exciting coil 10 and iron core 20, and this magnet exciting coil 10 is wrapped on the bobbin 30, and this iron core 20 extends through bobbin 30.This magnet exciting coil 10 twines growth flat, and is applicable to and is connected to external voltage source, thereby is selectively encouraged.Bobbin 30 becomes single-piece by the dielectric molded of plastic material, this single-piece has the tub of installing around magnet exciting coil 10 (barrel) 33, a pair of axially spaced

flange

31 and 32 is positioned at the opposite end of tub 33, strut rail (ledge) 34 extends from a flange 31, and extension 40 extends from another flange 32.Iron core 20 by the magnetic material manufacturing so that its opposite end is axially outwards outstanding from magnet exciting coil 10 respectively, to limit from outside first magnetic pole 21 of flange 31 with from the second outside magnetic pole 22 of flange 32.Armature 50 by the magnetic material manufacturing to comprise: actuator legs 52, it is along the elongation of axial length of bobbin 30; And anchor leg 51, its from an end of actuator legs with angular bend less than 90 degree.This actuator legs 52 is applicable to connection or touches the object that is driven by solenoid actuator.

Strut rail 34 is cooperated to limit hinged support with adjacent flange 31, this hinged support supports to bobbin 30 with armature 50, and in response to the de-energisation and the excitation of magnet exciting coil 10, make armature 50 in Fig. 4 off-position and the service position among Fig. 5 between pivot.Narrow bridge (the narrowed bridge) 35 at the width end place of strut rail 34 by being positioned at flange 31 is outwards outstanding from the top axial ground of flange 31, to limit the groove 36 between the upper end of strut rail 34 and flange 31.Described groove 36 is at its width end opening, when armature 50 is assembled into solenoid group, anchor leg 51 entered from side direction.Flange 31 is formed on it and has a projection width end of 37, and this projection 37 is laterally spaced apart with bridge 35, and cooperate with bridge 35 with as a pair of laterally spaced side stop part, with anchor leg 51 is remained on protruding 37 and bridge 35 between.Narrow bridge 35 has enough elasticity, when through projection 37 with anchor leg 51 insertion grooves 36 in the time, narrow bridge 35 makes strut rail 34 temporarily be out of shape along the direction that groove 36 is broadened, after this, strut rail 34 returns anchor leg 51 is positioned between the side stop part (promptly protruding 37 and bridge 35).As shown in Figure 2 best, sidewall 38 is sagging from a width end of strut rail 34, and forms the end stop 39 with angle, and this end stop 39 is positioned at the below of strut rail 34, is used for engaging with hook 59 in the lower end of anchor leg 51.By engaging of hook 59 and end stop 39, remain to armature 50 on the bobbin 30 and prevent that armature 50 from upwards skidding off bobbin through grooves 36.Groove 36, projection 37 and end stop 39 are made into suitable dimension and are positioned, when anchor leg 51 directly contacts with first magnetic pole 21, armature 50 is supported on the bobbin 30, as shown in Figure 6, do not produce at magnet exciting coil 10 under the situation of magnetic force, armature is pivoted between the service position among off-position and Fig. 5 in Fig. 4.In the off-position of Fig. 4, between the upper end of flange 31 and actuator legs 52, be shaped on minim gap, to allow the pivoting action of armature 50 service position in Fig. 5.

When magnet exciting coil 10 was energized, armature 50 is the off-position in Fig. 4 by ring spring 60 fexible bias pressures, and was actuated to resist this bias voltage and service position in Fig. 5 pivots.Under the excitation of magnet exciting coil 10, the magnetic force that obtains causes actuator legs 52 to be attracted to second magnetic pole 22, and with the pivoting action of armature 50.Second magnetic pole 52 is bent upwards with the right angle, to attract actuator legs 52 effectively.Ring spring 60 as an example of replying parts, inserts the free end of actuator legs 52 and integratedly between the axially outward extending extension 40 of the flange 32 of bobbin 30, and is assembled in the top of the column (stud) 41 on this extension 40.

As shown in Figure 6, first magnetic pole 21 of iron core 20 has flat end face, and this flat end face has pivot edge 23 and opposite edges 24 respectively in its lower end and upper end.When armature 50 was in off-position among Fig. 6, anchor leg 51 kept EDGE CONTACT with pivot edge 23, and to reserve clearance G between the anchor leg 51 and first magnetic pole 21, this clearance G becomes than wide at 23 places, pivot edge towards opposite edges 24.Therefore, the magnetic attraction that is created between first magnetic pole 21 and the anchor leg 51 is used so that armature 50 pivots towards the service position, becomes additional relationships with the magnetic attraction that acts between the actuator legs 52 and second magnetic pole 22.The pivot of this layout by the aforesaid armature that combines with armature structure supports to be realized, being configured to of armature: anchor leg 51 with less than 90 the degree angles (α) with respect to actuator legs 52 bendings, and find that this structure is more favourable than layout possible in Fig. 7, in the layout of Fig. 7, anchor leg 51 with greater than the angles (α) of 90 degree with respect to actuator legs 52 bendings, and with top edge 24 EDGE CONTACT of first magnetic pole so that pivot around top edge.In this case, the magnetic pull between the anchor leg 51 and first magnetic pole 21 is opposite with the magnetic attraction that results between the actuator legs 52 and second magnetic pole, thereby has stoped the pivoting action of armature.

Be noted that, in this connection, join the motion that stop part 39 limits armature 50 service position in Fig. 5 to by hook 59, contact so that do not carry out face in the service position of anchor leg 51 in Fig. 5 with first magnetic pole 21, even and since anchor leg 51 with less than 90 the degree angles (α) from actuator legs 52 bendings, when actuator legs 52 became parallel relation with the axle of iron core 20, anchor leg 51 still kept the EDGE CONTACT with first magnetic pole 21.

Fig. 8 illustrates the remodeling of the foregoing description, and wherein the end of actuator legs 52 forms near the ladder of second magnetic pole 22 member 54 of (stepped-down) downwards, and this second magnetic pole 22 directly extends rather than is bent upwards from bobbin 30.Identical parts by with first embodiment in identical reference marker come mark.This remodeling helps providing a kind of thin type structure.In this remodeling, also have: utilize bobbin 30 so that ring spring 60 is supported on the extension 40 of bobbin 30 best, just can assemble this ring spring thereby need not any extra separating component.Reply element (60) be arranged on second magnetic pole (22) be benchmark, along axial, the relative part place of magnet exciting coil (10) with first magnetic pole (21).

Fig. 9 illustrates another embodiment of the present invention, and this embodiment is same as the previously described embodiments, and except actuator legs 52 is constructed to have elasticity, this fexible bias pressure armature 50 with when the magnet exciting coil de-energisation, makes armature remain on off-position.Use identical reference marker to come the identical parts of mark.In off-position, anchor leg 51 can be held and first magnetic pole, 21 EDGE CONTACT, even disengages with first magnetic pole 21.When magnet exciting coil 10 was energized, actuator legs 52 was attracted to second magnetic pole 22, flexibly was out of shape simultaneously, and was attended by the pivoting action of armature 50.That is, after armature 50 was switched to the point of hook 59 and end stop 39 engagements, actuator 52 was attracted to second magnetic pole 22, and strain is to move to the service position with armature simultaneously.After the attraction that will act on actuator legs 52 in response to the de-energisation of coil removed, the elasticity of actuator legs 52 forced actuator 50 to get back to off-position.Therefore, answer element and support component that solenoid actuator of the present invention can be wherein, this helps to reduce axial length.

Although top embodiment and change shape and explained that anchor leg 51 is in its service position and first magnetic pole 21 maintenance EDGE CONTACT, hinged support structure is for providing some tolerances between the anchor leg 51 and first magnetic pole 21, on stricti jurise, to make anchor leg 51 keep separating at the off-position and first magnetic pole, but hinged support like this structure with a flash of magnet exciting coil 10 excitations chien shih anchor leg 51 enter EDGE CONTACT, the follow-up pivoting action of realization armature 50 with assuring success.

Claims

1. solenoid actuator comprises:

Bobbin (30);

Magnet exciting coil (10), it is wrapped on the described bobbin, is used for being connected with external voltage source, thereby is optionally encouraged;

Iron core (20), it is configured to extend through described bobbin so that have first magnetic pole (21) and second magnetic pole (22), and described first magnetic pole (21) and second magnetic pole (22) outwards protrude described magnet exciting coil respectively at the end to axial of described magnet exciting coil;

Armature (50), it has actuator legs (52), and described actuator legs stretches out from described magnet exciting coil along the axial length of described magnet exciting coil;

Hinged support (31,34), it is configured to described armature is supported to described iron core pivotally, is used to make described armature to carry out pivoting action between service position and off-position;

Wherein:

Described armature forms and comprises anchor leg (51), and described anchor leg extends with the relation that becomes angle with the described actuator legs end from described actuator legs;

Described hinged support (31,34) forms the global facility of described bobbin and is arranged on an axial end of described iron core, described anchor leg is positioned near described first magnetic pole, part with described actuator legs is positioned near described second magnetic pole simultaneously

Described hinged support structure one-tenth makes described anchor leg directly support with described first magnetic pole and contacts, and

Wherein said anchor leg (51) keeps EDGE CONTACT in described service position and described first magnetic pole (21).

2. solenoid actuator as claimed in claim 1, wherein:

Described first magnetic pole is constructed with flat end face, and described flat end mask has pivot edge (23) and opposite edges (24), and described pivot edge is positioned at than the position of described opposite edges further from described actuator legs.

Described hinged support structure becomes to make the pivot edge of described anchor leg and described flat end face carry out EDGE CONTACT, with when described armature is in off-position, between the pivot edge of described anchor leg and described flat end face, form the gap, described gap is wide at described pivot edge place towards described opposite edges ratio, so that under the excitation of described magnet exciting coil, cause described anchor leg to pivot, so that described armature is moved to described service position around described pivot edge.

3. solenoid actuator as claimed in claim 1, wherein:

Described hinged support structure becomes to have groove (36), the ccontaining described anchor leg that passes through wherein of described groove; A pair of side stop part (35,37), along the Width of described anchor leg separately, with the described anchor leg of restriction between the stop part of described side; And end stop (39), the engaged at end of itself and described anchor leg is used for described anchor leg is remained on described groove.

4. solenoid actuator as claimed in claim 1, wherein:

Described actuator legs and described anchor leg angulation are less than 90 degree.

5. solenoid actuator as claimed in claim 1 also comprises:

Reply element (60), it is arranged between the extension of described actuator legs and described bobbin, with under the de-energisation of described magnet exciting coil, make described armature flexibly be returned to described off-position, it is axial with the described first magnetic pole relative part place of benchmark along described magnet exciting coil that described answer element is arranged on described second magnetic pole.

6. solenoid actuator as claimed in claim 1, wherein:

Described actuator legs is constructed with elasticity, and under the excitation of described magnet exciting coil, described actuator legs is resisted described elasticity and is attracted to described second magnetic pole.